FR 9171 then FR 4640 at Arlanda
Barcelona → Stockholm → Riga
Timetable, Stockholm time
10:55FR 9171 from Barcelona at the gate
14:25FR 4640 to Riga leaves the gate
3 h 30 apart on the timetable
The last days
FR 9171 and FR 4640 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.